Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11824516 | Piezoelectric device and manufacturing method of the same | Tetsuya Watanabe, Koji Toshikawa, Hirokazu Iwata | 2023-11-21 |
| 10659005 | At-cut crystal element, crystal resonator and crystal unit | Takayuki Kuwahara, Hirokazu Iwata | 2020-05-19 |
| 10333489 | Crystal unit | Yoshiharu Sato, Hirokazu Iwata | 2019-06-25 |
| 10263597 | Crystal unit | Yoshiharu Sato, Hirokazu Iwata | 2019-04-16 |
| 9018826 | Mesa-type quartz-crystal vibrating piece and quartz crystal device | Hiroyuki Sasaki, Manabu Ishikawa | 2015-04-28 |
| 8580126 | Piezoelectric vibrating pieces comprising edge mesa steps, and methods for manufacturing same | Hiroyuki Sasaki, Manabu Ishikawa | 2013-11-12 |
| 8541928 | Quartz-crystal devices exhibiting reduced crystal impedance | Takehiro Takahashi, Hiroyuki Sasaki, Manabu Ishikawa, Shinobu Yoshida | 2013-09-24 |
| 8525394 | Mesa-type AT-cut quartz-crystal vibrating piece and quartz-crystal device | Manabu Ishikawa, Hiroyuki Sasaki | 2013-09-03 |
| 8519601 | Crystal device and inspection method of crystal device | Manabu Ishikawa, Hiroyuki Sasaki | 2013-08-27 |
| 8415858 | Piezoelectric vibrating pieces and devices, and methods for manufacturing same | Manabu Ishikawa, Hiroyuki Sasaki, Mitoshi Umeki, Kenichi Kikuchi | 2013-04-09 |
| 8405286 | Mesa-type at-cut quartz-crystal vibrating piece and the quartz-crystal device | Manabu Ishikawa, Hiroyuki Sasaki | 2013-03-26 |
| 8390176 | Stacked crystal resonator and manufacturing method thereof | — | 2013-03-05 |